And the inhabitant shall not say, I am sick: the people that dwell therein shall be forgiven their iniquity.

Wesley's Notes

33:24 The inhabitant - Of Jerusalem. Sick - Shall have no cause to complain of any sickness or calamity. Forgiven - They shall not only receive from me a glorious temporal deliverance; but, which is infinitely better, the pardon of all their sins, and all those spiritual and everlasting blessings, which attend upon that mercy.

Jamieson-Fausset-Brown Bible Commentary

24. sick-Smith thinks the allusion is to the beginning of the pestilence by which the Assyrians were destroyed, and which, while sparing the righteous, affected some within the city ("sinners in Zion"); it may have been the sickness that visited Hezekiah (Isa 38:1-22). In the Jerusalem to come there shall be no "sickness," because there will be no "iniquity," it being forgiven (Ps 103:3). The latter clause of the verse contains the cause of the former (Mr 2:5-9).

Matthew Henry's Concise Commentary

33:15-24 The true believer watches against all occasions of sin. The Divine power will keep him safe, and his faith in that power will keep him easy. He shall want nothing needful for him. Every blessing of salvation is freely bestowed on all that ask with humble, believing prayer; and the believer is safe in time and for ever. Those that walk uprightly shall not only have bread given, and their water sure, but they shall, by faith, see the King of kings in his beauty, the beauty of holiness. The remembrance of the terror they were in, shall add to the pleasure of their deliverance. It is desirable to be quiet in our own houses, but much more so to be quiet in God's house; and in every age Christ will have a seed to serve him. Jerusalem had no large river running by it, but the presence and power of God make up all wants. We have all in God, all we need, or can desire. By faith we take Christ for our Prince and Saviour; he reigns over his redeemed people. All that refuse to have Him to reign over them, make shipwreck of their souls. Sickness is taken away in mercy, when the fruit of it is the taking away of sin. If iniquity be taken away, we have little reason to complain of outward affliction. This last verse leads our thoughts, not only to the most glorious state of the gospel church on earth, but to heaven, where no sickness or trouble can enter. He that blotteth out our transgressions, will heal our souls.